ETE DOIS DE JULHO - Secondary Wastewater Treatment Plant in Salvador, Bahia

ETE DOIS DE JULHO is a wastewater treatment plant located in the Dois de Julho neighborhood of Salvador, the capital of Bahia state in northeastern Brazil. The plant serves a small population of 2,560 residents, reflecting its role in a localized residential area within the larger Salvador metropolitan region. The plant provides secondary treatment, which is the standard biological treatment level required under Brazilian regulations (CONAMA resolutions) for municipal wastewater. Secondary treatment typically involves biological degradation of organic matter followed by sedimentation. The plant discharges a daily volume of 276.69 cubic meters of treated effluent. The treated effluent from ETE DOIS DE JULHO ultimately reaches the Atlantic Ocean, as Salvador is a coastal city on the Bay of All Saints (Baía de Todos os Santos). The bay is a large estuarine system that supports diverse marine life, including mangroves and fish species. Proper treatment helps protect this sensitive coastal ecosystem from nutrient pollution and pathogens.

The plant discharges into the Bay of All Saints (Baía de Todos os Santos), a large tropical estuary on Brazil's northeastern coast. This bay is ecologically significant, supporting mangrove forests, seagrass beds, and coral reefs that provide habitat for fish, crustaceans, and migratory birds. The bay also receives freshwater from several rivers, and its waters are used for fishing and recreation. Effective wastewater treatment is crucial to prevent eutrophication and maintain water quality in this productive coastal ecosystem.